lewis



. model.) 48heets-8heat1.

' 0. S. LEWIS.

Calendar-Clocks.

Patented June 1, 1880.

No. 228,26L

NFHE. PHOTO-LITHOGRAPNER. WAQHINGTON. D C

(Hod e1.) 4Sheets-Sheet 2.

' C. S. LEWIS.

Calendar-mocks. No.- 228,261. Pateh.tedlune1,1880.

ATTORNEY WITNESSES N.PE\E.RS. PHOTO-LITHKSGRAPHER, WASHINGTON D Cv (ModeL) 4Sheets-Sheet 3.

'0. S. LEWIS.

' Calendar-Clocks. ,No. 228,261. Patented June], 1880.

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. U 1 gm WITNESSES INVENTOR @QUI ) I 8 TTORNE Y 4 Sheets-P8119 4.

model.) Y G. S. LEWIS.

Calendar-Clocks. No. 228,261.- Patented June1,1880- UNITED STATES PATENT OEEIcE.

CHARLES. S. LEWIS, OF IVATERBURY, CONNECTICUT, ASSIGNOR TO \VATERBURY CLOCK COMPANY, OF SAME PLACE.

CALENDAR-CLOCK.

SPECIFICATION forming To all whom it may concern:

Be it known that I, CHARLES S. LEWIS, of Waterbury, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Clocl;Calei1- dars; and I do hereby declare the following to be a full, clear, and exact description of the invention, such ,as will enable others skilled in the art to which it pertains to make and use it, reference being bad to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in calendar-clocks, and relates particularly to that class of calendar-clocks provided with a hand or pointer which indicates on a dial the day of the month, a cylinder with the days of the week printed or otherwise indicated thereon, and another cylinder furnished with the names of the different months of the year, the two cylinders being revolved independently of each other to at all times expose to view the month and day of the month.

The object of my invention is to provide clock-calendar mechanism of the type hereinbefore described, of such construction and relative arrangement ofparts that a positive step-by-step movement shall be imparted to the day-of-the-month hand or pointer and dayof-the-week cylinder, and to provide mechanism, in connection with the month-of-the-year cylinder, which shall cause the latter to accurate] y indicate the proper month of the year irrespective of the number of days of the month, and to automatically operate the jump-over mechanism to compensate for the variation in the number of days in the different months of the year, the jump-over mechanism to be operated simultaneously with the movement of the month-cylinder, so that as the month-cylinder is actuated to expose to view another month the day-of-the-month hand will be instantly revolved therewith, and move from the last day of the preceding month to the first day of the next succeeding month; further, to provide mechanism for automatically indicating the extra day of a leap-year. My purpose is to accomplish these several results by part of Letters Patent No. 228,261, dated June 1, 1880.

Application filed March 529, 1880. (Model) mechanism of the simplest and most durable form of construction, which shall be composed of few parts, not liable to become disarranged or impaired by use, and subjected to slight wear, and requiring but little power for its operation, and also to produce a calendar susceptible of being manufactured and supplied to the trade at a very small initial cost.

With these several ends in view, my invention consists in the several details of construction and relative arrangements and combinations of parts, as will hereinafter be described, and pointed out in the claims.

In the accompanying drawings, Figure l is a view, in front elevation, of my improved clock-calendar, the day-of-themonth dial being partly broken away to show the mechanism of the calendar. Fig. 2 is a plan view. Fig. 3 is a view in perspective, the month-cylinder being removed and the reciprocating slide for actuating the cylinder mechanism shown in its lowest position. Fig. a is a view, in perspective, with the day-of-the-week cylinder removed and the slide in its raised position. Fig. 5 is a view, partly in section and partly in side elevation, looking toward the inner end of the month-cylinder. Fig. 6 is a detached view, in perspective, of the springdetent that engages with the twelve-toothed wheel on the month-cylinder shaft. Fig. 7 is an end elevation of the monthcylinder, showin g the montlrwheel with its series of teeth or notches on its periphery. Fig. Sis a detached view of the month-wheel, with its leap-year wheel in position to be turned by the stationary engaging-pin. Fig. 9 is a view, in side elevation, of the month-wheel, with the leapyear abutment or detent support shifted into proper position for causing the month-cylinder to be retained against movement throughout leap-year day, and to cause the jump-over mechanism to operate the day-of-the-month hand in a proper manner, and Fig. 10 is a view, in perspective, of the leap-year wheel and its abutment or detent support.

A represents the baseplate of the calendar, which is designed to be secured in a horizontal position within the clock-case at any deed distance below the clock-movement. To the opposite ends of plate A are secured the shaftbearings a a, and to its central portion is aflixed a double shaft-bearing, a WVithin the upper ends of=bearings a a (t are journaled the cylinder-shafts B B. Upon the shaft 13 is mounted a cylinder or drum, 0, upon which are designated the days of the week.

In the present instance I have shown cylinder 0 provided with two series of names for indicating the days of the week for two weeks in succession; but I do not limit myself to this arrangement, as cylinder 0 may be furnished with the names of the days of one week or several weeks in succession, as may be desired.

Upon the shaft 13 is mounted a cylinder or drum, D, having the names of the months of the year designated thereon.

To the shaft B is secured a toothed wheel, D, provided with fourteen teeth, Z), or one tooth for each one of the fourteen days designated on the day-of-the-week cylinder G.

A stepby-step motion is imparted to the wheel D by the following mechanism A col lar or sleeve, 0, is journaled loosely upon the shattB between the wheel D and cylinder 0. To the collar or sleeve 0 are rigidly secured the arms E F, which may be made separate and attached to the collar, or may be stamped out of a single piece of sheet metal, and an eye formed therein, and the latter secured to the end of the collar: A gravity or spring-actuated pawl, 0, is pivoted to the outer end of arm E, the pin or lug 0, attached to the free end of the pawl, being arranged and adapted to engage with the teeth of the wheel D.

The outer end of arm F is provided with a pin, j", which works within an elongated open slot formed in the outer end of the bent arm G, which latter is connected or formed integrally with the vertically-reciprocating slide H. The lower end, g, of slide H extends through a slot, g, in the bracket 1 and is formed with an elongated slot or opening, 1", through which latter passes one end of the shaft 1 Thus the slide H is permitted free vertical movement and is prevented from lateral displacement. This slide is formed with its upper end bent at right angles to its length and perforated at 71/ t'orthe attachment of a lift-rod, (not shown,) but which is connected with the clock-movement in such a manner that it will be raised once in every twenty-four hours. This movement may be effected by connecting a snail with the clockanovement and arranging the train so that the snail shall make a complete revolution every twenty-four hours.

A lever is pivoted at one side of the snail, and a pin attached to the lever rests upon the periphery of the snail. To the free end of the lever is attached the lift-rod which connects with the slide I-I. Thus the latter is gradually raised every twenty-four hours and instantly drops at the expiration of such duration of time.

1 represents a spiral spring, one end of which is attached to the base or plate A, and its opposite end to the outer end of the arm F.

It will thus be observed that by raising the slide H the arm G thereof serves to raise the arm F, thereby turning the collar or sleeve 0 on its shaft, and turning the arm E backward, enabling the pawl pivoted thereto to ride over one of the teeth of the wheel, and when the slide H is released the spring .1 serves to impart a quick movement to the wheel 1) a dis tance equal to one of its teeth, and hence to revolve the cylinder 0 one step, and thereby expose to view the next succeeding day of the week.

A spring, 1', is secured at one end to the base A, the upper end of the spring pressing lightly against the teeth of wheel 1), but with snflicient power to retain the wheel and cylinder from rotating backward while the pawl is being carried backwardly over the teeth of the wheel 1).

Another flat spring, i, is secured to the base A on the opposite side of wheel 1), the upper end of the spring being curved, as at 11 and serving as a detent. Upon one side ot the arm F is secured a )in if which strikes the curved end i of the detent when the slide H is released, and forces the detent in engage ment with the teeth of wheel D, thereby preventing the latter from moving farther than one tooth at each movement of the slide. The day-of-the-week cylinder or drum 0 is thus positively moved step by step, or one step dun ing every twenty-four hours, and this movement is quick and certain; and, further, the cylinder is locked against any back ward movement and positively locked against any p ogressive or forward moveanent excepting at one interval of the twenty-four hours of the day.

Having described the construction and relative arrangement of the devices employed for actuating the day-of-the-week cylinder, I will now proceed to describe the devices used for indicating the month of the year and the day of the month.

Shaft B has secured thereto a wheel, J, which is provided with twelve teeth, or one for everymonth of the year, and also with a cylinder or drum, D, upon which are printed or otherwise designated the names of the twelve months of the year. Between the wheel J and cylinder D a sleeve or collar, j, is loosely journaled upon the shaft B, and to said collar are attached the arms L M. The arm L has a gravity or spring pawl, 7c, pivoted to its outer end, the free end of the pawl being provided with a pin, 1, which engages with the teeth l ot'the wheel J. The arm L, when moved backward, carries the pawl with it, the t'ree end of" the latter being prevented fron'i moving the wheelJ backwardly by means of a flat spring,

m, one end of which is attached to the base A, while its upper and free end bears against the teeth of wheel J with sufficient pressure to prevent the latter from any backward movement.

Arm M, near its outer end, is furnished with an elongated pin, N, with which engages an arm, 0, connected with slide H. A spring metal detent, P, is secured at its lower end to base A, while its upper and free end is bent rearward and then forward, as illustrated in Fig. 6, the engaging edge a of the detent projecting laterally from its main portion. The upper end of the detent P is formed with an incline, a, with which engages a pin or lug, 0, secured to the side of the arm M. A spiral spring, P, is secured at one end to the base A, and at its opposite end to the outer end of arm M, the spring serving to draw the arm downward. Thus it will be understood that when the arm 0 on the slide H is raised it strikes the pin N, attached to the arm M, raising the latter and moving the arm L backward, and causing the gravity-pawl to ride over one tooth of the wheel J and engage with the next succeeding tooth, as shown in Fig. 3, and in which position the parts will be retained until the cylinder D is automatically released, in a manner hereinafter explained. When the cylinder D is released the spiral spring 1? serves to rotate it through a distance equal to one tooth of the wheel J, or a distance corresponding to one month of the year, thecylinder being automatically arrested and locked against any further movement by means of the spring-detent P, which is forced inwardly by the pin 0 on the arm M, and caused to engage with the next succeeding tooth of the wheel J.

A shaft, 1, is located between the cylinders O and D, one end of the shaft being supported in a bracket-bearin g, 0, and its central portion supported in the bearing a To one end of shaft I is rigidly secured a toothed wheel, Q, having thirty-one teeth, q. The rim of wheel Q is provided with a stop-pin, q, and ajumpmotion pin, It. Upon shaft I, between wheel Q and bearing 0, is loosely journaled the lower end, 1", of the arm It. The upper end of said arm is bent laterally, as at B and formed with an angular slot, R consisting of the vertical portion 1" and inclined portion 0"".

Slide His provided with a pin, S, which extends through the angular slot R in the arm R, the outer end of the pin being bent downwardly to constitute a stop, S. To the arm It is pivoted a pawl, S the lower and free end of which is provided with a pin, 8, having a beveled edge, 8. WVhen the slide His raised the pin S, connected therewith and working in the angular slot R serves to impart a lateral movement to the arm R, and causes the pawl S to ride over one tooth of wheel Q, the latter being prevented from moving backward by means of the spring 8 the free end of which bears on the teeth of the wheel with a sufficient pressure simply to prevent its being accidentally moved backward. When the slide H descends the pin S operates to move the arm laterally in an opposite direction, thereby causing the pawl S to move the wheel Q through a distance equal to one tooth. A step-by-step movement is thus imparted to wheel Q, by raising and lowering the slide H. When the slide H is in its lowest position the stop S extends downwardly in front of the rim of the wheel Q, and serves as a stop for the stop-pin g on said wheel. The forward end of shaft 1 has a hand or pointer, I, secured thereto, which serves to indicate the day of the month on the calendar-dial 1 A collar, T, is attached to the forward portion of shaft I, said collar being provided with a projection, t.

Beneath the collar or plate is located a cam, T, the cam edge or face it of which is formed on a curve corresponding with the circle described by the outer end of projection 13 in its revolution. (Jam T is secured to a rock shaft or bar, T the opposite ends of which are journaled in bearings t t To one end of the rock-shaft T is secured an arm, T provided with a lateral detent, T which engages with the notches or teeth a, formed on the periphery of the month-wheel U. A spiral spring, U, is secured at one end to the cam T and at the other end to the blztUkGUbGktllIlg a said spring serving to retain the detent T in engagement with the notches or teeth of the wheel U. There are twelve teeth formed on the periphery of wheel U, the teeth numbered 1, 3, 5, 7, 8, l0, and 12 being formed on the same circle, having forits center the center of the wheel U; or, in other words,the teeth abovereferred to are formed the farthest from the center of the wheel of any of the twelve teeth formed therein, and are all located at equal distances from the center of the wheel. These seven teeth represent the months of January, March, May, July, August, October, and December.

Teeth numbered 4, 6, 9, and 11 are foimed on a smaller circle, each tooth being nearer to the center of the wheel U than any of the series first mentioned, and represent the months of April, J nne, September, and -November.

Tooth numbered 2 is formed in a deep notch in the periphery of wheel U, and is nearer to the center of the wheel than any of the rest of the teeth and represents the month of February.

Upon the outer face of the wheel U, and in a radial line from tooth 2, is pivoted a leapyear wheel, V, which is shaped like a Maltese cross, it being form ed with the fourcurved sides 1), and with the elongated open slots '0 formed in each arm 02 of the wheel. The pivot or stud r of this wheel extends through the wheel U, and has secured to its opposite end an arm or abutment, V, which is revolved by the leap-year wheel.

V is a stationary cam secured to the end IIO bracket, the under side of the cam being provided with a curved depression or cut-away portion, V

The bearing a has a stationary pin or lug, W, secured thereto, and projecting laterally therefrom across the pathway of theleap-year wheel in its revolution.

The month-wheel U, upon which the leapyear wheel is pivoted, revolves once a year, and at every revolution the leap-year wheel is turned through on e-qu arter of a circle by means of the pin W, which enters one of the slots v and imparts a quarter-turn to the wheel. Throughout the remaining portionoi' the revolution of the month-wheel U the leap-year wheel is prevented from turning, as one of its curved sides o fits against the circular periphery of the cam V thus locking the wheel against rotary displacement; but when the leap-year wheel is carried beneath the cam V the cutaway portion V allows of the turning of the leap-year wheel one-quarter of a revolution by the pin or stud \V, as hereinbefore described.

Having described the construction and relative arrangement of parts of my improved clock-calendar, I will now describe its operation.

As the slide H rises and falls once every twenty-four hours, a step-by-step movementis imparted to the day-of-the-wcek cylinder by the mechanism hereinbefore described, thus exposing to view in regular succession the names of the days-of-the-week cylinder or drum.

For the sake of clearness in explanation, it will be assumed that the calendar has just recorded the 1st of January, and that the dayof-the-week cylinder has exposed Thursday to view on said cylinder. The slide H of the calendar mechanism,in shifting the parts from December to January, raises the long pin N to the position illustrated in Figs. 3 and L.

It will be observed that when the monthcylinder D is in this position the pawl It is in engagement with one of the teeth of the wheel J, being pressed against the tooth by the force of the spiral spring P, connected with the outer end of arm M, and tending to draw it downward and turn the cylinder D another step in its revolution. The spring-detent P is also released from engagement with the teeth of wheel J. The detent T will then be in engagement with tooth 1, representing January, the detent serving to prevent the spring P from rotating the month-cylinder. Tooth l is formed on the larger circle, or at the greatest distance from the center of the month-wheel U, and hence the arm T to which the detent T" is secured, or with which it is formed, is held in its shortest range of backward movement; or, in other words, when the detent T is in engagement with any one of the teeth 1, 3, 5, 7, S, 10, and 12, the arm T is retained at a less angle of inclination than any of its other adjustments throughout the year. As the cam T and arm T are secured to the same rock-shaft T it follows therefore that the forward and backward adjustment of the cam T is regulated by the particular adjustment of the arm T When the arm T is in the position described the cam T will be moved forward to its extreme limit of automatic adjustment. As the slide H rises and falls every twenty-four hours, the hand or pointer I will be moved around the dial step by step, thus indicating the proper day of the month. The cam T being held in its forward limit of adjustment, or farthest point from the path of the projection t in its revolution, allows said projection t to be revolv ed until the hand points to the number 31, indicating the thirty-first day of the month without disturbing the cam.

At the end of the 31st day of January the slide H falls, thereby imparting a slight progressive movement to projection t, causing it to strike the heel a of the cam and move it for- .vard suflicient distance to release the detent T from the tooth l in the month-wheel U, thereby allowing the spiral spring P to revolve the month-cylinder D another step and expose the month of February to view.

The month-cylinder is automatically arrested at the proper point by means of the pin 0 on the arm M coming in contact with the inclined upper portion of the spring-detent P, thereby forcing its edge a in engagement with the next succeeding tooth of wheel J, and holding the latter and the month-cylinder against further movement.

When the month-wheel U is released the 31st of January and revolves one notch, the detent T falls into the deep notch in the wheel and engages with tooth 2, representing February, which tooth is nearer the center of the wheel U than any of the others. The increased rearward movement of the arm T (allowed it by the deep notch in the wheel U) serves to allow the cam T to be drawn rearward by its spring to the limit of its rearward movement, or to such a distance that the toe w of the cam will be in the path described by the projection t in its revolution. The hand I continues to move step by step, indicating the days of the month of February on the dial, until it reaches the number 28, and at the end of the twenty-eighth day of the month the slide H falls, moving the projection t its regular distance. The cam T, being moved to the limit of its backward movement, will allow the projection t to strike the toe to at the expiration of the twen ty-eighth day of the month, thus moving the cam forward, oscillating the rock-shaft, and disengaging the detent T" from the month-wheel, and causing the month-cylinder to be shifted one step at the expiration of the twenty-eighth day and expose the month of March to view. It will be observed that the hand I must jump over three days at this point, to cause it to correctly indicate the first day of March. This jump-over movement is effected in the most simple and certain manner, as will now be explained.

When the hand 1 points to number 28 on the dial the jump-over pin R upon the thirty-onetoothed wheel Q, will be located slightly below the long pin N on the arm M. \Vhen the slide H drops it operates to turn the thirtyone-to'othed wheel through a distance equal to the distance between two of its teeth, and thus carry the hand or pointer to figure 29 on the dial. The slide in dropping releases the month cylinder, as hereinbefore described. The arm M is quickly turned, thereby causing the pin N to strike the jump-over pin It and revolve the wheel Q, until the stop'pln (1 on said whe'el comes in contact with the stop S, at which point the hand I will be stopped, and in such position will point to the number 1 on the dial. The slide H is then gradually raised on the first day of March, again raising the pin N to the position shown in Figs. 3 and 4, and the calendar mechanism continues to operate, causing the hand to revolve around the dial and indicate the thirtyone days of the month, as has been described with reference to the month of January. When the month-cylinder is automatically shifted from March to April the detent T engages with tooth or notch t on the monthwheel. This tooth is formed on a circle located outside of the circle on which tooth 2 is formed and within the circle embracing the teeth 1, 3, 5, 7, 8, 10, and 12, said intermediate circle having the teeth 4, 6, 9, and 11 formed thereon. \Vhen the detent T engages with any of the teeth of the series last mentioned the cam T will be held in such position that the projection it will strike the middle portion of its cam-face,or,in other words, will actuate the cam and release the month-cylinder at the expiration of the thirtieth day of the month. Before the month-cylinder has been released the slide H will have dropped and turned the hand or pointer from figure 30 to figure 31. The month-cylinder is then instantly released, allowing the pin N to strike the jump-over pin, thereby causing the hand to jump from figure 31 to figure 1 on the dial. Thus the month-cylinder and the day-ofthe-month hand are automatically operated throughout the year to correctly expose to view on the monthcylinder and to indicate on the dial the correct day of the month.

As heretofore stated, the leap-year wheel makes one complete revolution for four complete revolutions of the month-wheel, the lat ter revolving once every year. The leap-year wheel is adjusted on the month-wheel in such a manner that every leap-year the leap-year wheel will have carried the arm V around so that its edge e will be in line with tooth 2, or the February notch.

The purpose of the arm V is to lengthen the tooth 2, or to add one days length to said tooth, so that in a leap-year the month-wheel, instead of being released on the 28th of February, will not be released until the 29th.

The bracket-bearin g a located between the cylinders O and D, is constructed with the arms a a, in which are formed bearings for the shafts B and B, while in the main standard a is formed the bearing (L6 for the transverse shaft I. Thus the single bracket serves as a bearing for the three independent shafts, two of said shafts being in line with each other, and one at right angles to both of the others.

From the foregoing description and the drawin gs referred to therein, it will be observed that the day-of-the-week cylinder is moved step by step each day of the week, and the cylinder prevented from any backward movement, and its forward or progressive movement governed by locking mechanism which is positively operated every twenty-four hours. The month-of-the-year cylinder is positively locked against movement in either direction, with exception of an instant of time at the expiration of each month, when it is released and allowed to move one notch to expose to view the name of the next succeeding month. The slide H, which rises and falls every twentyfour hours, serves to move the thirty-onetoothed wheel one tooth every day, which movement is certain and regular. The dayof-the-month hand moves step by step over the dial, and is caused to jump over the extra days on the dial in the short months by means of the arm N striking the jum p-niotion pin in the thirty-one-toothed wheel, and moving thelatter around the desired distance and automatically arresting the movement of said wheel and its shaft, so that the hand shall point to the figure 1 on the dial.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a clock-calendar, the combination, with a 1nonth-of-the-year cylinder and daybf-themonth hand, of devices for automatically im parting a step-by-step movement to said hand once in every twenty-four hours, and for imparting a single movement to the jump-motionactuating pin N once during every month of the year, substantially as set forth.

2. In a clock-calendar, the combination, with the shaft on which the day-of-the-month hand is mounted and an arm or projection connected with said shaft, of a self adjustable cam connected with devices for releasing the month-ofthe-year cylinder, substantially as set forth.

3. In a clock-calendar, the combination, with the monthofthe-year cylinder and a monthwheel provided with the series of teeth at variable distances fromits center, as described, of a rock-shaft provided with a releasing-pawl at one end, which engages with the teeth of said month-wheel, and with a cam at the other end, the position of the cam being regulated by the position of the pawl or detent, and a device connected with the shaft on which the hand is mounted for actuating said cam and releasing the cylinder at the proper interval of time, substantially as set forth.

4:. In a clock-calendar, the combinatiomwi th a thirty-one-toothed wheel and a hand or pointer secured to a shaft, of a slide adapted to rise IIS and fall every twenty-four hours, a pivoted arm and means for imparting a lateral move ment thereto simultaneously with the rise and fall of said slide, and a pawl pivoted to said arm, the several parts being constructed so that the pawl will ride over one tooth when the slide is raised, and will rotate the wheel a distance equal to one tooth every time the slide is allowed to fall, substantially as set forth.

5. In a clock-calendar, the combination, with a toothed wheel provided with a stop-pin, a slide adapted to rise and fall every twentyfour hours, a pivoted arm provided with an irregular-shaped slot, and a pawl pivoted to said arm, ofa pin connected with the slide and extending through the irregular-shaped slot in the arm, said pin being bent downward to form a stop and arrestthe movement of the toothed wheel when the slide is allowed to fall, substantially as set forth.

(i. The combination, with the month-of-theyear cylinder, a twelve-toothed wheel connected therewith on the same shaft, an arm provided with a pawl which rides over the teeth of said wheel when the arm is moved in one direction and engages with one of said teeth when movedin the opposite direction, and an arm having a spring connected therewith formoving the wheel and cylinder in one direction, said arm provided with a pin or projection, of a slide which rises and falls every twenty-four hours and engages said arm and raises it against the pull of the spring once every month, and a pawl which engages with a month-wheel and retains the cylinder against rotary movement until the expiration of each month, substantially as set forth.

7. The combination, with the month-cylinder of a clock-calendar and a twelve-toothed wheel connected therewith on the same shaft, of a spring metal detent or pawl having its upper end curved or bent toward the wheel, and provided with a lateral projection, and a pin or lug secured to an oscillating arm, the parts being arranged so that the arm being moved in one direction causes the pin attached thereto to strike the curved end of the detent and force the lateral projection in engagement with one of the teeth of said wheel, substantially as set forth.

8. The combination, with the month-of-theyear cylinder, twelvetoothed wheel, arm L, provided with a pawl, and arm M, having a spring connected therewith and provided with pin N, of the slide H and thirty-one-toothed wheel Q provided with a jump-motion pin, substantially as set forth.

9. In a clock-calender, the combination, with a slide which rises and falls every twenty-four hours, a thirty-one-toothed wheel, and devices for imparting a step-by-step movement to said wheel once every twenty-four hours, of devices connected with the month-cylinder for automatieally moving said thirty-one-toothed wheel variable distances to compensate for the short months, and devices for automatically stopping said wheel, so that the hand shall always stop at the figure on the dial indicating the first day of the month, substantially as set forth.

10. The combination, with the month-wheel, of a leap-year wheel pivoted thereto and a cam for looking it against rotation except at one point of its revolution, substantially as set forth.

11. The combination, with the month-wheel, of the leap-year wheel, of Maltese-cross form, and provided with four elongated slots and a stationary pin for imparting motion to said wheel, substantially as set forth.

12. The combination, with the month-wheel U, of the leap-year wheel V, stationary cam V stationary pin or lug IV, and arm V, substantially as set forth.

13. The combination, with the month-cylinder D, monthwheel U, rock-shaft T, detent T and cam T, of the thirty-one-toothed wheel Q, and mechanism for imparting a stepby-step movement thereto, and an arm 01' projection, t, connected with the shaft I, for engaging with said cam and releasing the detent T from the notches in the month-wheel, substantially as set forth.

1.4. The combination, with the month-cylinder D and twelve-toothed wheel J, of the arms L M, pin N, and arm 0 on the slide II, substantially as set forth.

15. The combination, with the cylinder D and wheel J, of the arm M, provided with a pin, N, and the thirty-one-toothed wheel Q, provided with pin or lug It, substantially as set forth.

16. The combination, with the month-ofthe-year cylinder, arm M, and pin N, of the slide for raising the arm M, and the pin It on the wheel Q, said pin being struck by pin N to carry up or jump over for the shortmonths, substantially as set forth.

17. The combination, with the month-ofthe-year cylinder, of a rock-shaft, T detent T", engaging with the month-wheel U, and a cam, T, of an arm or projection, t, on the dayof-the-month shaft, for releasing themonth-ofthe-year cylinder, and stop mechanism for arresting the movement of the hand, substantially as set forth.

18. The combination, with the thirty-onetoothed wheel Q, provided with a stop-pin, of a slide which rises and falls every twentyfour hours and is provided with a stop for the stop-pin on the wheel Q, substantially as set forth.

19. The combination, with the thirty onetoothed wheel, of a slide for imparting motion to said wheel and provided with a stop for locking said wheel against rotary displacement.

20. The combination, with the shafts B, B, and I, of the central supporting-bracket provided with a bearing in its standard for shaft I, and with flanges in which are supported the adjacent ends of shafts BB, substantially as set forth.

21. The combination, with the monthof- In testimony that I claim the foregoing I the-year cylinder, of a slide for raising a lehave hereunto set my hand this 11th day of ver or arm, and means for retaining said lever March, 1880.. locked against the tension of a spring until 5 the expiration of each month, and a pin on the thirty-one-toothed Wheel, which is struck by said lever when released, thereby causing Witnesses: the day-of-the-month hand to jump over to the F. O. MCULEARY, first day of the next succeeding month, sub- A. W. BRIGHT. 1o stantially as set forth.

CHARLES S. LEWIS. 

